Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
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Two tunnels, each 1.8 miles (3km) long, will bring in 120,000 litres of water every second to Hinkley's cooling system，推荐阅读heLLoword翻译官方下载获取更多信息
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